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REVENUE BY GEOGRAPHIC AREA (Tables)
12 Months Ended
Dec. 31, 2014
Notes to Financial Statements  
REVENUE BY GEOGRAPHIC AREA
  For the Years Ended December 31,
  2012   2013   2014
United States $ 64,552   $ 71,713   $ 83,584
Europe   2,996     2,738     2,264
Other International   5,257     3,888     3,987
Total $ 72,805   $ 78,339   $ 89,837